User guide

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Chapter 7, Using RT.X100 Xtreme with Video for Windows Programs
Before you start capturing
To properly capture and play back audio, make sure you’ve set appropriate
recording and playback volume levels for your sound card, as explained in the
section “4. Configure your sound card” on page 13.
If you want to create RT. X100-compatible .avi files (such as to use in your
Adobe Premiere projects), make the following settings in your Video for
Windows program before you start capturing:
• Set the frame rate for your captured clips up to 29.97 frames per second on
an NTSC system, or up to 25 frames per second on a PAL system.
• For the best results, set the audio sampling rate to 44.1 or 48 kHz, and the
sample size to 16-bit (mono or stereo). If you’ll be capturing digital audio
(AES/EBU or S/PDIF), make sure you set the audio sampling rate to the
same rate as the digital input. For example, to capture audio from a CD
player, set the sampling rate to 44.1 kHz.
¦NoteThe Matrox VFW capture driver does not support running more than one
Video for Windows program at a time.
Capturing material for your production
The following sections explain how to select the device from which you want to
capture material, change the proc amp settings of your incoming video, and select
your video capture format and resolution.
¡ImportantDepending on which Video for Windows program you use, you
may not have access to all of the following settings. Some Video for Windows
programs may also override your settings with defaults needed for proper use of
the program. For instructions on a program’s use, such as how to capture
material, refer to your program’s documentation.
Selecting your capture source and adjusting
proc amp settings
1 Start your Video for Windows program.
2 Choose the program’s Video Source command (refer to your program’s
documentation).